Hi Guys,
Thanks for the replies. Thought I was going to have the chance to test it again tonight....but the weather intervened again. Anyway, I think I'll just leave it as it is for now, and see how things look when I next get to use it. As I said, it was only a minimal amount that fell on the corrector plate, and it looks ok as far as I can tell, so I'll just leave it for now.
Oh, I don't think we have to worry to much about acid rain or pollutants up here, though the salty sea air is a concern. I'm about 2kms inland.
Anyway, I guess I was a bit more concerned last night, as it wasn't something I was expecting, but I think it'll be ok. From what I've read, the coatings and things seem a bit more resiliant than you'd expect, so if they can survive mud, a bit of rain shouldn't hurt
And as anyone with an SCT would know, if you look at the front in the dark, it looks absolutely flawless. The mistake is looking at it with a light shining on it
Thanks again for the responses guys!